// "Replace Optional presence condition with functional style expression" "GENERIC_ERROR_OR_WARNING"

import java.util.*;

public class Main {
  public void testOptional(Optional<String> str) {
    if (str == null) str = Optional.empty();
      str.ifPresent(obj -> use(obj + ":" + obj));
  }

  void use(String obj) { System.out.println("String"); }
}